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Pérdida de Variación Genética en Tympanuchus cupido Después de un Cuello de Botella Poblacional en Wisconsin, EE.UU.
Author(s) -
Bellinger M. Renee,
Johnson Jeff A.,
Toepfer John,
Dunn Peter
Publication year - 2003
Publication title -
conservation biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.2
H-Index - 222
eISSN - 1523-1739
pISSN - 0888-8892
DOI - 10.1046/j.1523-1739.2003.01581.x
Subject(s) - population bottleneck , population , biology , genetic variation , microsatellite , loss of heterozygosity , demography , genetic variability , geography , zoology , allele , genetics , genotype , sociology , gene
Over the last century, populations of the Greater Prairie Chicken ( Tympanuchus cupido ) have declined or gone extinct throughout midwestern North America. In Wisconsin the population declined by 50% from 1951 to 1961 and has remained at low ( 1500 individuals ) but fluctuating levels for the past 40 years. We examined historic ( 1951 ) and contemporary ( 1996–1999 ) populations of prairie chickens in Wisconsin to determine whether there was a loss of genetic variation following the population bottleneck. We compared microsatellite DNA variation at six loci in historic ( 1951, n = 47 ) and contemporary ( 1996–1999, n = 87 ) populations. Population mean heterozygosity and number of alleles per locus were significantly lower in the late 1990s than in 1951. This loss of genetic variation following a population bottleneck is consistent with the results of a similar study in Illinois, but we found no evidence of a reduction in hatching success.